Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 2,435	$ 1,190
Treasury bills	6,141	6,542
Available-for-sale securities	0	1,256
Trade receivables, less allowance for doubtful accounts of $8 and $10, respectively	916	738
Inventories	1,558	1,224
Other current assets	175	163
Deferred income tax asset, current	12	0
Total current assets	11,237	11,113
Deferred income tax asset	102	0
Intangible assets, net	1,329	1,505
Property and equipment, net	1,076	1,146
Total assets	13,744	13,764
Current liabilities
Current maturities of note payable	390	381
Accounts payable current	176	126
Accrued expenses current	477	392
Accrued income tax	192	82
Total current liabilities	1,235	981
Long-term liabilities
Note payable - long term	0	390
Contingent earn-out	455	472
Deferred income tax liability	0	391
Total long-term liabilities	$ 455	$ 1,253
Commitments and contingencies
Stockholders' equity
Common stock par value $0.10 per share; authorized 10,000,000 shares; 3,395,521 shares issued and outstanding	$ 339	$ 339
Additional paid-in capital	1,863	1,816
Retained earnings	9,885	8,641
Accumulated other comprehensive income (loss) (unrealized gain (loss) on available-for-sale securities, net of income tax)	(33)	734
Total stockholders' equity	12,054	11,530
Total liabilities and stockholders' equity	$ 13,744	$ 13,764